Cerf Park is located at the Ennis Library, which is the spot of the old Cerf Mansion. The Cerf mansion was based on the Hospitality Pavilion at the 1904 St. Louis World's Fair, built in late 1904 by Ennis Texas Cotton Merchant, Louis Isadore Cerf. His widow, Mamie Cerf donated the home to the City of Ennis. One of the historical artifacts still standing is the original fencing that enclosed the late home at the Cerf Mansion. In the courtyard are beautiful rose flowers and plants and an Historical marker dedicated to Jack Lummus, Ennis' Congressional Medal of Honor soldier of WWII.